Abstract: Sangzhi-Shimen tectonic belt is a secondary-unit in the east of the western Hubei and Hunan tectonic belt, bordering the northwest side of Xuefeng intracontinental deformation system, belonging to the transition zone between western Hubei and Hunan tectonic belt and Xuefeng intracontinental deformation system. In the mean time, it is also a typical multicycle-superimposed sedimentary zone. Since the Precambrian, the area has been affected by plate tectonic movement and intracontinental orogeny for a long time. Therefore, the structural trace has gradually shifted from NNE-SSW to nearly E-W direction from southwest to northeast, also making structural deformation become very complex. The structural analysis on the tectonic belt helps to reveal the transition relationship between the Xuefeng Mountain and East-Sichuan-western Hubei and Hunan tectonic belt and explore the deformation mechanism of the middle and upper Yangtze region, which means a lot to the oil and gas exploration in the complex terrain area. Prior to this, limited by the quality and quantity of seismic data, the understanding of the deformation characteristics, the evolution, and the dynamic mechanism of the transition zone between western Hubei and Hunan tectonic belt and Xuefeng intracontinental deformation system is quite-incomplete. This paper finely depicts the structural characteristics of the Sangzhi-Shimen tectonic belt, establishing the model of tectonic evolution of south segment and north segment of tectonic belt, based on 2D seismic data, geological data and logging data, according to the principle of fault related folds. The deformation process of south segment and north segment of tectonic belt are similar: folds gradually form after recoil fault and low angle overthrust fault forming autochthonous burial structure together, influenced by multi-stage tectonic movements since Yanshan period. However, there are certain differences. The main controlling factors of the differential evolution are as follows: 1） the distance between the nail line and the deformation belt; 2） the differential deformation of the Xuefeng nappe at the back edge.